Watc h - reg u lato r



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D. H. CHURCH.

WATCH REGULATOR.

No. 484,176. Patented Oct. 11, 1892.

WTNESSES:

UNITED STATES PATENT ()FFicn.

DUANE H. CHURCH, OF NEYVTON, MASSACHUSETTS.

WATCH-REG U LATO R.

SPECIFICATION forming part of Letters Patent No. 484,176, dated October 11, 1892 Application filed May 2, 1892. Serial No. 431,506. (No model.)

To 00% whom it may concern:

Be it known that I, DUANE H; CHURCH, of Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in \Vatch-Regulators, of which the following is a specification.

This invention relates to that class of watchregulators in which the regulator'arm, which is connected with and affects the tension of the hair-spring, is moved by means of a serrated disk or small pinion mounted on the balance-cock and engaged with a segmental or serrated surface 011 the regulator-arm.

The invention consists in a regulator-arm provided at its outer end with a segmental enlargement extending in both directions from the arm and containinga curved or segmental slot, one side of which is provided with minute teeth or corrugations, combined with a rotatable wheel or disk pivotally connected to the balance-cock and provided at its center wit-h a small pinion or minute serrated Wheel engaging the serrated edge of the slot in the regulator-arm, the said wheel or plate being shaped to be rotated by a touch of the finger of the operator and to impart motion to the regulator-arm through the pinion, the toothed surface on the regulator-arm being at the outer or concave side of the slot, so that the teeth of the arm are held in engagement with the teeth of the pinion by the elasticity of that portion of the arm comprising the outer side of the slot, as I will now proceed to describe.

Of the accompanying drawings, forming part of this specification, Figure 1 represents a top plan view of the balance-cock of a watch provided with a regulator embodying my im provement. Fig. 2 represents a section on line 2 2, Fig. 1.

The same letters of reference indicate the same parts in both the figures.

In the drawings, a represents the balancecock, which is or may be of the usual form.

0 represents the regulator-arm, which is connected at one end of the cock so as to be capable of swinging thereon, as usual, the connection of the arm with the cock being preferably effected by means of a ring 0, which is integral with one end of the arm, and a circular boss a, formed on the cock and encircled by said ring. The outer end of the arm 0 is provided with lateral extensions formed to contain a segmental slot 0 which is substantiallyconcentric with the center on which the arm 0 swings, the said extensions constituting an elongated segmental frame surrounding a segmental opening and formed on the outer end of the arm, one side 0 of said frame presenting a convex edge to the slot, while the other side 0 presents a concave edge to said slot. The said frame is made sufficiently cylindrical to make it somewhat elastic and yielding, for a purpose which, will presently appear. The inner edge of the side 0 of said arm is provided with a series of minute teeth, as shown in Fig. 1.

d represents a wheel or plate, which is supported by the raised part of the cock aand is pivotally connected with the latter by means of a stud or screw 6, which permits the wheel (Z to be freely rotated. To the upper or outer surface of the wheel (Z is attached a small pinionf, which projects into the slot 0 and has teeth formed to engage the teeth on the outer side piece 0 on the regulator-arm. It will be seen that when the wheel (Z is rotated the engagement of the pinionfwit-h the toothed side piece 0 will cause the regulator-arm to move in the same direction as that of the side of the wheel to which the operators finger is appliedthat is to say, if the wheel is rotated in the direction indicated by the arrow as in Fig. 1 the regulator-arm will be moved in the direction indicated by the arrow 13. The elasticity of the frame on the outer end of the regulator-arm keeps the toothed side piece 0 of said frame yieldingly engaged with the pinion f, and thus maintains an operative connection between said pinion and side piece at all times.

Heretofore in all watch-regulators which are moved by the rotation of the wheel on the balance-cock the outer end of the regulatorarm has not been provided with a slotted or open frame, as in the present case; but said arm has had only a single curved surface, such as would be formed by the side piece a if the outer side piece 0 and the continuations thereof which connect it with the side piece 0 were cut away, the result being that the serrated edge on the regulator-arm is a convex instead of a concave edge and bears upon the side of the pinion f nearest the conter of oscillation of the regulator-arm, so that, first, when the Wheel is rotated the regulatorarm is moved in a direction opposite to that of the direction of movementof the operators finger, and, secondly, there is no elastic or yielding connection between the toothed surface on the regulator-arm and the pinion on the operating-wheel.

It Will be seen that by my improvement I avoid confusion on the part of the operator and the liability of turning the Wheel in the wrong direction to effect the desired regulalation, and, secondly, I maintain an operative connection at all times between the pinion and the toothed surface on the regulatorarm.

I claim- DUANE H. CHURCH.

Witnesses O. F. BROWN, A. D. HARRISON. 

